Observation and mass measurement of the baryon Xib-.

نویسندگان

T Aaltonen

A Abulencia

J Adelman

T Affolder

T Akimoto

M G Albrow

S Amerio

D Amidei

A Anastassov

K Anikeev

A Annovi

J Antos

M Aoki

G Apollinari

T Arisawa

A Artikov

W Ashmanskas

A Attal

A Aurisano

F Azfar

P Azzi-Bacchetta

P Azzurri

N Bacchetta

W Badgett

A Barbaro-Galtieri

V E Barnes

B A Barnett

S Baroiant

V Bartsch

G Bauer

P-H Beauchemin

F Bedeschi

S Behari

G Bellettini

J Bellinger

A Belloni

D Benjamin

A Beretvas

J Beringer

T Berry

A Bhatti

M Binkley

D Bisello

I Bizjak

R E Blair

C Blocker

B Blumenfeld

A Bocci

A Bodek

V Boisvert

G Bolla

A Bolshov

D Bortoletto

J Boudreau

A Boveia

B Brau

L Brigliadori

C Bromberg

E Brubaker

J Budagov

H S Budd

S Budd

K Burkett

G Busetto

P Bussey

A Buzatu

K L Byrum

S Cabrera

M Campanelli

M Campbell

F Canelli

A Canepa

S Carrillo

D Carlsmith

R Carosi

S Carron

B Casal

M Casarsa

A Castro

P Catastini

D Cauz

M Cavalli-Sforza

A Cerri

L Cerrito

S H Chang

Y C Chen

M Chertok

G Chiarelli

G Chlachidze

F Chlebana

I Cho

K Cho

D Chokheli

J P Chou

G Choudalakis

S H Chuang

K Chung

W H Chung

Y S Chung

M Cilijak

C I Ciobanu

M A Ciocci

A Clark

D Clark

M Coca

G Compostella

M E Convery

J Conway

B Cooper

K Copic

M Cordelli

G Cortiana

F Crescioli

C Cuenca Almenar

J Cuevas

R Culbertson

J C Cully

S DaRonco

M Datta

S D'Auria

T Davies

D Dagenhart

P de Barbaro

S De Cecco

A Deisher

G De Lentdecker

G De Lorenzo

M Dell'Orso

F Delli Paoli

L Demortier

J Deng

M Deninno

D De Pedis

P F Derwent

G P Di Giovanni

C Dionisi

B Di Ruzza

J R Dittmann

M D'Onofrio

C Dörr

S Donati

P Dong

J Donini

T Dorigo

S Dube

J Efron

R Erbacher

D Errede

S Errede

R Eusebi

H C Fang

S Farrington

I Fedorko

W T Fedorko

R G Feild

M Feindt

J P Fernandez

R Field

G Flanagan

R Forrest

S Forrester

M Franklin

J C Freeman

I Furic

M Gallinaro

J Galyardt

J E Garcia

F Garberson

A F Garfinkel

C Gay

H Gerberich

D Gerdes

S Giagu

P Giannetti

K Gibson

J L Gimmell

C Ginsburg

N Giokaris

M Giordani

P Giromini

M Giunta

G Giurgiu

V Glagolev

D Glenzinski

M Gold

N Goldschmidt

J Goldstein

A Golossanov

G Gomez

G Gomez-Ceballos

M Goncharov

O González

I Gorelov

A T Goshaw

K Goulianos

A Gresele

S Grinstein

C Grosso-Pilcher

R C Group

U Grundler

J Guimaraes da Costa

Z Gunay-Unalan

C Haber

K Hahn

S R Hahn

E Halkiadakis

A Hamilton

B-Y Han

J Y Han

R Handler

F Happacher

K Hara

D Hare

M Hare

S Harper

R F Harr

R M Harris

M Hartz

K Hatakeyama

J Hauser

C Hays

M Heck

A Heijboer

B Heinemann

J Heinrich

C Henderson

M Herndon

J Heuser

D Hidas

C S Hill

D Hirschbuehl

A Hocker

A Holloway

S Hou

M Houlden

S-C Hsu

B T Huffman

R E Hughes

U Husemann

J Huston

J Incandela

G Introzzi

M Iori

A Ivanov

B Iyutin

E James

D Jang

B Jayatilaka

D Jeans

E J Jeon

S Jindariani

W Johnson

M Jones

K K Joo

S Y Jun

J E Jung

T R Junk

T Kamon

P E Karchin

Y Kato

Y Kemp

R Kephart

U Kerzel

V Khotilovich

B Kilminster

D H Kim

H S Kim

J E Kim

M J Kim

S B Kim

S H Kim

Y K Kim

N Kimura

L Kirsch

S Klimenko

M Klute

B Knuteson

B R Ko

K Kondo

D J Kong

J Konigsberg

A Korytov

A V Kotwal

A C Kraan

J Kraus

M Kreps

J Kroll

N Krumnack

M Kruse

V Krutelyov

T Kubo

S E Kuhlmann

T Kuhr

N P Kulkarni

Y Kusakabe

S Kwang

A T Laasanen

S Lai

S Lami

S Lammel

M Lancaster

R L Lander

K Lannon

A Lath

G Latino

I Lazzizzera

T LeCompte

J Lee

Y J Lee

S W Lee

R Lefèvre

N Leonardo

S Leone

S Levy

J D Lewis

C Lin

C S Lin

M Lindgren

E Lipeles

A Lister

D O Litvintsev

T Liu

N S Lockyer

A Loginov

M Loreti

R-S Lu

D Lucchesi

P Lujan

P Lukens

G Lungu

L Lyons

J Lys

R Lysak

E Lytken

P Mack

D MacQueen

R Madrak

K Maeshima

K Makhoul

T Maki

P Maksimovic

S Malde

S Malik

G Manca

A Manousakis

F Margaroli

R Marginean

C Marino

C P Marino

A Martin

M Martin

V Martin

M Martínez

R Martínez-Ballarín

T Maruyama

P Mastrandrea

T Masubuchi

H Matsunaga

M E Mattson

R Mazini

P Mazzanti

K S McFarland

P McIntyre

R McNulty

A Mehta

P Mehtala

S Menzemer

A Menzione

P Merkel

C Mesropian

A Messina

T Miao

N Miladinovic

J Miles

R Miller

C Mills

M Milnik

A Mitra

G Mitselmakher

A Miyamoto

S Moed

N Moggi

B Mohr

C S Moon

R Moore

M Morello

P Movilla Fernandez

J Mülmenstädt

A Mukherjee

Th Muller

R Mumford

P Murat

M Mussini

J Nachtman

A Nagano

J Naganoma

K Nakamura

I Nakano

A Napier

V Necula

C Neu

M S Neubauer

J Nielsen

L Nodulman

O Norniella

E Nurse

S H Oh

Y D Oh

I Oksuzian

T Okusawa

R Oldeman

R Orava

K Osterberg

C Pagliarone

E Palencia

V Papadimitriou

A Papaikonomou

A A Paramonov

B Parks

S Pashapour

J Patrick

G Pauletta

M Paulini

C Paus

D E Pellett

A Penzo

T J Phillips

G Piacentino

J Piedra

L Pinera

K Pitts

C Plager

L Pondrom

X Portell

O Poukhov

N Pounder

F Prakoshyn

A Pronko

J Proudfoot

F Ptohos

G Punzi

J Pursley

J Rademacker

A Rahaman

V Ramakrishnan

N Ranjan

I Redondo

B Reisert

V Rekovic

P Renton

M Rescigno

S Richter

F Rimondi

L Ristori

A Robson

T Rodrigo

E Rogers

S Rolli

R Roser

M Rossi

R Rossin

P Roy

A Ruiz

J Russ

V Rusu

H Saarikko

A Safonov

W K Sakumoto

G Salamanna

O Saltó

L Santi

S Sarkar

L Sartori

K Sato

P Savard

A Savoy-Navarro

T Scheidle

P Schlabach

E E Schmidt

M P Schmidt

M Schmitt

T Schwarz

L Scodellaro

A L Scott

A Scribano

F Scuri

A Sedov

S Seidel

Y Seiya

A Semenov

L Sexton-Kennedy

A Sfyrla

S Z Shalhout

M D Shapiro

T Shears

P F Shepard

D Sherman

M Shimojima

M Shochet

Y Shon

چکیده

We report the observation and measurement of the mass of the bottom, strange baryon Xi(b)- through the decay chain Xi(b)- -->J/psiXi-, where J/psi-->mu+mu-, Xi- -->Lambdapi-, and Lambda-->ppi-. A signal is observed whose probability of arising from a background fluctuation is 6.6 x 10(-15), or 7.7 Gaussian standard deviations. The Xi(b)- mass is measured to be 5792.9+/-2.5(stat) +/- 1.7(syst) MeV/c2.

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